Brake master cylinder 12 mm front for BMW R2V after 9/1980 with single front disc.

For all two valve boxer models 1981 and later, with single disc brake 
Fits BMW R 65 GS, R 80G/S, R 80ST, R 45 and R 65 from 09/`81 up with Brembo Brake calliper (the black one)

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